[Bug middle-end/107789] New: [13 Regression] slp ICE on hdf5: internal compiler error: Segmentation fault

["slyfox at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107789

            Bug ID: 107789
           Summary: [13 Regression] slp ICE on hdf5: internal compiler
                    error: Segmentation fault
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: slyfox at gcc dot gnu.org
  Target Milestone: ---

Likely this week's gcc-13 regression. Originally observed on hdf5-1.12.2
upstream package. Smaller extracted example:

$ cat a.c.c
long ga, gb, gc, gd;
unsigned long ge, gf;
int gh;
int bug(void) {
  gf = gb ? ga : 0;
  gf -= gh * ge;
  gc += gd * ge;
  if (gf)
    gc += gf;
  return 0;
}

Crashes as:

gcc -std=c99 -O2 -c a.c.c -o a.o -O2
during GIMPLE pass: slp
a.c.c: In function 'bug':
a.c.c:4:5: internal compiler error: Segmentation fault
    4 | int bug(void) {
      |     ^~~
0x1ae8c54 diagnostic_impl(rich_location*, diagnostic_metadata const*, int, char
const*, __va_list_tag (*) [1], diagnostic_t)
        ???:0
0x1ae98a6 internal_error(char const*, ...)
        ???:0
0xcb2b3f crash_signal(int)
        ???:0
0xf194b7 complex_mul_pattern::matches(_complex_operation, hash_map<_slp_tree*,
_complex_perm_kinds, simple_hashmap_traits<default_hash_traits<_slp_tree*>,
_complex_perm_kinds> >*, hash_map<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> >, bool,
simple_hashmap_traits<default_hash_traits<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> > >, bool> >*, _slp_tree**, vec<_slp_tree*, va_heap,
vl_ptr>*) [clone .part.0]
        ???:0
0xf1a423 complex_operations_pattern::recognize(hash_map<_slp_tree*,
_complex_perm_kinds, simple_hashmap_traits<default_hash_traits<_slp_tree*>,
_complex_perm_kinds> >*, hash_map<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> >, bool,
simple_hashmap_traits<default_hash_traits<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> > >, bool> >*, _slp_tree**)
        ???:0
0xf0736f vect_match_slp_patterns_2(_slp_tree**, vec_info*, hash_map<_slp_tree*,
_complex_perm_kinds, simple_hashmap_traits<default_hash_traits<_slp_tree*>,
_complex_perm_kinds> >*, hash_map<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> >, bool,
simple_hashmap_traits<default_hash_traits<pair_hash<nofree_ptr_hash<_slp_tree>,
nofree_ptr_hash<_slp_tree> > >, bool> >*, hash_set<_slp_tree*, false,
default_hash_traits<_slp_tree*> >*)
        ???:0
0xf08597 vect_analyze_slp(vec_info*, unsigned int)
        ???:0
0xf11283 vect_slp_region(vec<basic_block_def*, va_heap, vl_ptr>,
vec<data_reference*, va_heap, vl_ptr>, vec<int, va_heap, vl_ptr>*, unsigned
int, loop*)
        ???:0
0xf1398c vect_slp_bbs(vec<basic_block_def*, va_heap, vl_ptr> const&, loop*)
        ???:0
0xf13bd4 vect_slp_function(function*)
        ???:0
0xf1b489 (anonymous namespace)::pass_slp_vectorize::execute(function*)
        ???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

$ gcc -v
Using built-in specs.
COLLECT_GCC=/<<NIX>>/gcc-13.0.0/bin/gcc
COLLECT_LTO_WRAPPER=/<<NIX>>/gcc-13.0.0/libexec/gcc/x86_64-unknown-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with:
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.0 20221118 (experimental) (GCC)